During September 2025, Modi enhanced the denoland/typescript-go repository by expanding test coverage for BigInt literal parsing. Focusing on Go programming and unit testing, Modi developed a dedicated test suite that validated the correct handling of binary, octal, and hexadecimal BigInt literals, including support for underscores and uppercase prefixes. This work addressed edge cases in numeric literal parsing, reducing the risk of runtime errors when interoperating between TypeScript and Go. By improving test-driven development practices and ensuring CI readiness, Modi’s contribution increased the reliability and maintainability of BigInt parsing logic, laying a foundation for safer integration in real-world TypeScript codebases.